COMBINING AN ORGANIC RANKINE CYCLE AND A HEAT PUMPCYCLE IN A TEST PLANT FOR REVERSIBLE STORAGE OFENERGY

Steger D, Regensburger C, Eppinger B, Will S, Karl J, Schlücker E (2019)


Publication Language: English

Publication Type: Conference contribution, Original article

Publication year: 2019

Conference Proceedings Title: Proceedings of the 5th International Seminar on ORC Power Systems

Event location: Athen

ISBN: 978-90-9032038-0

Abstract

The heat pump cycle is a well-known concept to lift the temperature of a medium by using electricalenergy and waste heat. The ORC-process on the other side offers the possibility to obtain electricalenergy from thermal energy. Combining these two processes and adding a thermal storage enables aninnovative and reversible energy storage concept calledCombined Heat Pump - Organic Rankine Cycle(HP-ORC). This paper describes preliminary considerations, design methods and the development of aHP-ORC-pilot-plant. The upper and lower storage temperature are critical factors, as they determine thestorage capacity and influence the overall efficiency (power-to-power-efficiency). Methods of multi-criteria decision-making, such as Pareto-Optimization, identify favorable combinations. The selectionof the working fluid has also a strong impact on the combined process, as apparatus properties alter, insome cases effecting significant increase in costs. The realization of the compressor of the heat pumpandtheexpanderoftheORCinonesinglemachineisanothercomplextasktobeconsidered. Especiallythe lubrication system has to fulfill the demands of both modes, thus innovative designs of the oil supplyand separation are shown.

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How to cite

APA:

Steger, D., Regensburger, C., Eppinger, B., Will, S., Karl, J., & Schlücker, E. (2019). COMBINING AN ORGANIC RANKINE CYCLE AND A HEAT PUMPCYCLE IN A TEST PLANT FOR REVERSIBLE STORAGE OFENERGY. In Proceedings of the 5th International Seminar on ORC Power Systems. Athen.

MLA:

Steger, Daniel, et al. "COMBINING AN ORGANIC RANKINE CYCLE AND A HEAT PUMPCYCLE IN A TEST PLANT FOR REVERSIBLE STORAGE OFENERGY." Proceedings of the ORC2019, Athen 2019.

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